Abstract
A 350-million-year-old fossil provides evidence of an almost unknown stage in the origin of land vertebrates. It is also a reminder of how little is known of the relationships between the main lineages of amphibians and reptiles.
Cite
CITATION STYLE
APA
Carroll, R. (2002, July 4). Early land vertebrates. Nature. https://doi.org/10.1038/418035a
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